[nosefrog]

FWIW, the default behavior in Emacs is that tab indents the line to what its heuristics tell it the line should be at, no matter where your cursor is in the line. This is confusing at first, but as long as the heuristic is correct it's pretty nice (but it drives you crazy when the heuristic is wrong for whatever reason).

[ThinBold]

I check the document and the it looks great. Even if it fails to work at least you are always brought back to an integer value of x-coordinate.